3-4 I/O Circuits

3

I/O INTERFACE

3-4 I/O Circuits

This section provides the SRCP controller I/O circuit specifications and examples of how the I/O circuits should be connected. Refer to these specifications and diagrams when connecting to external equipment such as a PLC.

3-4-1 I/O circuit specifications

Input Power

DC24V±10% (supplied through EXT.CN)

Input Circuit

Excluding emergency stop input circuit

 

Insulation method:

Photocoupler insulation

 

Input terminal:

Relay contact or NPN open collector transistor connected between

 

 

input terminal and 0V terminal.

 

Input response:

30ms max.

 

Input current:

5mA/DC24V

 

Input sensitivity:

Current on: 3mA min.

 

 

Current off: 1mA max.

 

Emergency stop input circuit

 

 

 

 

 

Input terminal:

Relay contact connected between emergency stop inputs 1 and 2

 

 

(between EMG1 and EMG2).

 

Input response:

5ms max.

 

Input current:

40mA/DC24V

Output Circuit

 

 

 

Insulation method:

Photocoupler insulation between internal circuit and output tran-

 

 

sistor

 

Output terminal:

NPN open collector output of all collective output common termi-

 

 

nals (0V side)

 

Output response:

1ms max.

 

Max. output current:

50mA/DC24V per output

 

Residual ON voltage:

1.5V max.

Pulse Output Circuit

Output method:

Line driver (26LS31 or equivalent)

Maximum output current: 20mA

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Yamaha SRCP manual I/O Circuits, 1 I/O circuit specifications